In a statment, transportation secretary Anthony Foxx said the Note 7 will be banned on flights because "even one fire incident inflight poses a high risk of severe personal injury and puts many lives at risk."

The DoT announcement says Note 7s may be confiscated from owners if they try to bring them on a flight. They may also be fined. Airlines have been instructed to deny passengers entry on a flight if they're spotted with a Note 7.

"Samsung, together with carriers, is working to communicate the US Department of Transportation's new order to ban all Galaxy Note 7 devices in carry-on and checked baggage on flights," a Samsung spokesperson said in a statement to Business Insider. "We have encouraged airlines to issue similar communications directly to their passengers."

Before now, passengers on US flights have been told to power down the Note 7 before takeoff. However, they were still allowed on planes.

Samsung canceled the Note 7 for good on Tuesday and is in the process of helping customers return or exchange their phones. The company is also investigating what caused the Note 7 to overheat and plans to share its findings in a few weeks, a Samsung spokesperson told Business Insider earlier this week.